10. The
work of mathematician Roger Penrose in the early 1970s, on the geometry of what
are called aperiodic tiles, turned out to describe the architecture of a
previously unknown class of crystals.
(A) what are
called aperiodic tiles, turned out to describe
(B) what is called
aperiodic tiles, describes
(C) aperiodic
tiles, describing
(D) so-called
aperiodic tiles, describe
(E) aperiodic
tiles, it turned out to describe
答案是A 我选择B 因为GEOMETRY是单 OF 结构前后的 数的搭配不是太清楚 请教
http://forum.chasedream.com/dispbbs.asp?boardid=23&replyid=142558&id=20256&page=1&skin=0&Star=2
这里有解释
表过程，变化，转折的词要保留。
e.g. become, come, go, remain, turn out, etc..
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